Do you have advice for rippling on one side of abdomen after drainless tummy tuck 6 months ago? (Photos)

It is surprising that lipo was not performed, as this rippling is a possible artifact of liposuction. The rippling may be improved by use of a liposuction basket cannula, which can release some of the underlying scar tissue and re-distribute the fat. The goal in this case is to not remove fat, but to re-distribute it to smooth the skin. Best wishes in your recovery!

The pictures appear to show a vertical linear line of bunched tissue on the right side, presumably due to not distributing the flap in such a way as to prevent this when the flap was re-attached.
An in-person exam would really be needed to see if the tissue is adherent at the area of vertical bunching. Assuming it is, to avoid re-elevating the flap, one could consider discontinuous undermining with a liposuction cannula without suction to see if this would release any adhesion along that line and let the flap lie smoother.

It is impossible to gat a good information about tone and laxity of your skin from these photos. Whether liposuction, TT revision or both, are needed to improve current result can be decided only on the basis of in person consultation. You should seek a consultation with a board certified plastic surgeon with good reputation in body contouring surgery. Good luck.